CN106269250B - A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property - Google Patents

A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property Download PDF

Info

Publication number
CN106269250B
CN106269250B CN201610648802.2A CN201610648802A CN106269250B CN 106269250 B CN106269250 B CN 106269250B CN 201610648802 A CN201610648802 A CN 201610648802A CN 106269250 B CN106269250 B CN 106269250B
Authority
CN
China
Prior art keywords
mrow
msub
coal
temperature
mfrac
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610648802.2A
Other languages
Chinese (zh)
Other versions
CN106269250A (en
Inventor
寿春晖
祁志福
邹正伟
刘春红
陈彪
邬东立
张勤
谢尉扬
童小忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Co Ltd Of Zhe Neng Institute For Research And Technology
Original Assignee
Zhejiang Co Ltd Of Zhe Neng Institute For Research And Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Co Ltd Of Zhe Neng Institute For Research And Technology filed Critical Zhejiang Co Ltd Of Zhe Neng Institute For Research And Technology
Priority to CN201610648802.2A priority Critical patent/CN106269250B/en
Publication of CN106269250A publication Critical patent/CN106269250A/en
Application granted granted Critical
Publication of CN106269250B publication Critical patent/CN106269250B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/24—Details of magnetic or electrostatic separation for measuring or calculating parameters, efficiency, etc.

Landscapes

  • Electrostatic Separation (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

The invention discloses a kind of low temperature electric precipitation safe and highly efficient operation method based on coal property, belong to thermal power generating technology field.The low cryogenic technique of prior art is variant to the adaptability of Coal rank, there is a possibility that because flue-gas temperature reduces aggravation low-temperature corrosion risk, lack a kind of exercisable operable means for quantifying risk assessment method and reducing relevant risk to ensure the safe operation of electric cleaner.Coal analysis parameter of the invention based on coal-burning power plant, the low-temperature corrosion risks and assumptions run according to coal calculating is specifically used on low cold precipitator, and the solution that excessive risk factor coal safety in operation is effectively lifted using mixed coal technology is given, increases the security reliability of equipment longtime running.Meanwhile the present invention proposes low cold precipitator optimum operation temperature range always according to " calculation of dew-point temperature of acid " and " Submicron Particles control mechanism ", the environment protecting of the complete more efficient removing of particles things can be achieved.

Description

A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property
Technical field
The present invention relates to a kind of low temperature electric precipitation safe and highly efficient operation method based on coal property, belong to thermal power generation Technical field.
Background technology
With becoming increasingly conspicuous for problem of environmental pollution, country proposes more to each discharge of major pollutant index of fired power generating unit High request.For new environmental protection standard especially minimum discharge standard, (dust concentration is existing conventional dry electrostatic precipitator 5mg/Nm3) adaptability is poor, it is necessary to lift the performance of the novel techniques such as low temperature electrostatic precipitation technology.
Low temperature electrostatic precipitation technology can expand the scope of application of conventional dry electric cleaner, it is met newest environmental protection mark Alignment request, it is one of effective technology that coal-burning power plant's high-effective dust-removing and stable emissions are realized under minimum discharge requirement.Due to current The practical growing number of domestic low temperature electrostatic precipitation technology is still on the low side, and application time is universal shorter, for low low temperature dedusting The optimized running method of equipment, the control strategy for instructing based on different coal properties inlet flue gas temperature, ature of coal parameter and low temperature are rotten Erosion relation etc. lacks systematic Study, and prior art has following some problems.
Low cryogenic technique is variant to the adaptability of Coal rank, given operational factor (such as low cold precipitator of producer Entrance flue gas temperature value etc.) only design coal is assessed with the calculating for checking coal；When using other coals, exist because Flue-gas temperature reduces the possibility of aggravation low-temperature corrosion risk, lacks a kind of exercisable quantization risk assessment method and reduction The operable means of relevant risk ensure the safe operation of electric cleaner.
The setting of cleaner entrance flue gas temperature is directly related to efficiency of dust collection, and control cigarette temperature carries in particular range Rise the effect of dust removal performance；And designing unit only gives a running temperature recommended value substantially, lack matching and specifically use A kind of operation cigarette temperature guidance method of coal；As unit uses the change of coal, design load be not optimal running values, it is necessary to There is a kind of method to determine optimized operation flue-gas temperature according to the ature of coal parameter for using coal, to realize the efficient of low cold precipitator Operation.
For drawbacks described above present in currently available technology, it is necessary to be researched and developed in fact, solution exists in the prior art The defects of.
The content of the invention
The defects of for prior art, it is an object of the invention to provide one kind to pass through low temperature electric precipitation ature of coal adaptability Risk assessment, avoid using the low-temperature corrosion risk increase problem that Coal rank may be brought, and combine mixed coal technology, reduce hair The possibility of raw low-temperature corrosion；It is fixed to solve low temperature cleaner operation cigarette temperature, can not match that to use coal characteristic progress excellent The problem of changing adjustment；Optimum operation cigarette temperature computational methods based on calculation of dew-point temperature of acid method Yu Submicron Particles control mechanism, are obtained To optimal entrance flue gas temperature value, instruct low cold precipitator to run, realize dust removing effects lifting based on coal property Low temperature electric precipitation safe and highly efficient operation method.
To achieve the above object, the technical scheme is that：
A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property, step are as follows：
The first step, with reference to power plant's practical operation situation, detection uses coal, is reported according to coal analysis and obtains coal property Parameter；
Second step, according to the value of dust concentration and sulfuric acid mist concentration in the flue of cleaner entry position, calculate deduster The risks and assumptions of low-temperature corrosion occur, it is determined whether need to carry out mixed coal, to lift security；
3rd step, according to calculation of dew-point temperature of acid method formula in flue gas, the coal property parameter meter in being reported with reference to coal analysis Calculation obtains low cold precipitator optimum operation temperature upper limit；
4th step, according to the result of the test of Submicron Particles removal efficiency and cigarette kelvin relation, i.e. Submicron Particles control Mechanism processed sets optimal control temperature, obtains low cold precipitator optimum operation lowest temperature；
5th step, according to the judge and measure of second step, ensure the safe operation of low cold precipitator, according to the 3rd step, The result of calculation of 4th step, the temperature control strategy of low cold precipitator is designed, realize the efficiently de- of wholegrain footpath range of particle thing Except effect.
Coal analysis parameter of the invention based on coal-burning power plant, calculated according to the specific coal that uses on low cold precipitator The low-temperature corrosion risks and assumptions of operation, and give and effectively lift excessive risk factor coal safety in operation using mixed coal technology Solution, increase equipment longtime running security reliability.Meanwhile the present invention is always according to " calculation of dew-point temperature of acid " and " sub-micro Rice grain thing control mechanism " proposes low cold precipitator optimum operation temperature range, and it is more efficient that full particles things can be achieved The environment protecting of removing.
Further, second step, by surveying acquisition dust concentration and sulfuric acid mist concentration data or being joined according to coal property Number calculates the value of dust concentration and sulfuric acid mist concentration.
Further, low cold precipitator low-temperature corrosion risks and assumptions F is calculated, it comprises the following steps：
S301, deduster gas approach dust concentration value A is obtained, can be by surveying or being calculated, the present invention calculated Journey is as follows：
B20=0.1116 × Har+0.012×Mt+0.0161×(α-1)×B18
B18=0.0889 × (Car+0.375×Sar)+0.265×Har-0.0333×Oar
Wherein q4For incomplete combustion loss (%), afFor flying dust share, α is excess air coefficient, AarTo receive Base buck (%), QAr, netFor net calorific value as received basis (kilojoule per kilogram), HarFor As-received hydrogen (%), MtFor total moisture (%), SarFor full sulphur (%), CarFor As-received carbon (%), OarFor As-received oxygen (%)
S302, deduster gas approach sulfuric acid mist concentration value B is obtained, also can be by surveying or being calculated, present invention meter Calculation process is as follows：
η ' is transformation ratio；
S303, corrosion risk factor calculation formula：F=B/A × 1000.
Further, according to risks and assumptions calculated value, as F≤5, deduster low-temperature corrosion risk is smaller, can without mixed coal Directly use.
The present invention calculates the corrosion risk factor, without the low temperature electric precipitation ature of coal adaptability risk assessment of complexity, profit The parameter calculation risk evaluation index obtained with coal analysis, instruct operation；And mixed coal technology is combined, reduce and low-temperature corrosion occurs Possibility.
Further, the 3rd step, according to calculation of dew-point temperature of acid method, calculates optimum operation temperature upper limit, that is, calculates flue gas acid dew Point temperature T1The upper limit, process are as follows：
T1=TLd, w+ΔT
Wherein, PwFor steam partial pressure in flue gas, unit kPa, k are the transformation ratio related to the catalyst number of plies, afIt is winged Grey share, AarFor As-received buck, QAr, netFor net calorific value as received basis, SarFor full sulphur.
Further, k span 1.0~1.3.
Further, optimum operation lowest temperature is calculated, according to the examination of Submicron Particles removal efficiency and cigarette kelvin relation Result is tested, i.e. Submicron Particles control mechanism sets optimal control temperature T ', low cold precipitator optimum operation lowest temperature Calculation formula be：T2=T1-T’。
The optimum operation temperature of the present invention determines according to the specific coal that uses, and can solve the problem that low temperature cleaner runs cigarette Temperature is fixed (design load), can not match and use the problem of coal characteristic optimizes adjustment；Based on calculation of dew-point temperature of acid method and sub-micro The optimum operation cigarette temperature computational methods of rice grain thing control mechanism, obtain optimal entrance flue gas temperature value, instruct low temperature dedusting Device is run, and realizes the lifting of dust removing effects.
Compared with prior art, the invention has the advantages that：
Coal analysis parameter of the invention based on coal-burning power plant, calculated according to the specific coal that uses on low cold precipitator The low-temperature corrosion risks and assumptions of operation, and give and effectively lift excessive risk factor coal safety in operation using mixed coal technology Solution, increase equipment longtime running security reliability.Meanwhile the present invention is always according to " calculation of dew-point temperature of acid method " and " Asia Micron particles thing control mechanism " proposes low cold precipitator optimum operation temperature range, and it is higher that full particles things can be achieved Imitate the environment protecting of removing.
Present invention could apply on the Large-scale fire-electricity unit with low cold precipitator, reduction uses Coal rank and brought The risk of (low temperature) cleaner low-temperature corrosion, provide optimal inlet flue gas temperature value, lifting means efficiency of dust collection；It can either increase The security and stability of oil (gas) filling device operation, while wholegrain footpath range of particle thing preferably environmentally friendly removal effect can also be realized.
Brief description of the drawings
Fig. 1 is present invention process flow chart；
Fig. 2 is that low temperature electrostatic precipitation technology efficiency of dust collection of the invention lifts effect diagram；
Fig. 3 is that low temperature electrostatic precipitation technology fine particle of the invention traps performance synergy schematic diagram；
Fig. 4 is that low temperature electric precipitation optimized running strategy of the invention puies forward effect effect diagram.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
On the contrary, the present invention covers any replacement done in the spirit and scope of the present invention being defined by the claims, repaiied Change, equivalent method and scheme.Further, in order that the public has a better understanding to the present invention, below to the thin of the present invention It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art Description can also understand the present invention completely.
A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property, step are as follows：
The first step, with reference to power plant's practical operation situation, detection uses coal, is reported according to coal analysis and obtains coal property Parameter；
Second step, dust concentration and sulfuric acid mist concentration data are obtained or according to coal property parameter calculating flue dust by surveying The value of concentration and sulfuric acid mist concentration, and then according to the value of dust concentration and sulfuric acid mist concentration in the flue of cleaner entry position, Calculate the risks and assumptions that low-temperature corrosion occurs for deduster, it is determined whether need to carry out mixed coal, to lift security；
3rd step, according to calculation of dew-point temperature of acid method formula in flue gas, the coal property parameter meter in being reported with reference to coal analysis Calculation obtains low cold precipitator optimum operation temperature upper limit；
4th step, according to the result of the test of Submicron Particles removal efficiency and cigarette kelvin relation, i.e. Submicron Particles control Mechanism processed sets optimal control temperature, obtains low cold precipitator optimum operation lowest temperature；
5th step, according to the judge and measure of second step, ensure the safe operation of low cold precipitator, according to the 3rd step, The result of calculation of 4th step, the temperature control strategy of low cold precipitator is designed, realize the efficiently de- of wholegrain footpath range of particle thing Except effect.
Specific embodiment as shown in Figure 1：
S01, detects corresponding unit and uses coal, and data below (being shown in Table 1) can be obtained according to coal analysis report：
The unit of table 1 uses coal coal analysis data
S02, calculate low cold precipitator low-temperature corrosion risks and assumptions (F)：
S021, deduster gas approach dust concentration value A is obtained, can be used by surveying or being calculated in the present invention Calculating method, process are as follows：
B20=0.1116 × Har+0.012×Mt+0.0161×(α-1)×B18
B18=0.0889 × (Car+0.375×Sar)+0.265×Har-0.0333×Oar
Wherein q4For incomplete combustion loss, according to ature of coal situation with combustion system difference span 0.5% Between~8%, usual slag tap coal-powder boiler respective value is minimum, chain furnace highest, and dry-bottom pulverized coal furnace value is between the two；Root According to unit and coal-fired situation, it is taken as in the present invention：1.31%.afFor flying dust share, span 0.8~0.9, coal-powder boiler can unite One takes 0.9；The type of furnace is coal-powder boiler in the present invention, takes 0.9.α is excess air coefficient, and coal-powder boiler deduster front position can uniformly take 1.4, therefore the present invention takes 1.4.Remaining parameter can be calculated A=17319mg/m according to the data of table 13。
S022, deduster gas approach sulfuric acid mist concentration value B is obtained, also can be by surveying or being calculated, in the present invention It is as follows using calculating method, process：
Transformation ratio η ' is the conversion ratio that sulfur dioxide in flue gas is converted into sulfuric acid mist in the present invention, for Sar≤ 0.7% Coal desirable 3.5%, for 0.7% ＜ Sar≤ 1% coal desirable 3%, for Sar＞ 1% coal desirable 2.5%~ 1.5%；3.5% is taken in the present invention, can be calculated B=46.9mg/m3。
S023, according to corrosion risk factor calculation formula：F=B/A × 1000
F=2.71 can be obtained.
According to risks and assumptions calculated value, there is F≤5, thus judge deduster low-temperature corrosion risk occurs it is smaller, can be without Mixed coal directly uses.
S03, calculate flue gas acid dew point temperature T1(low cold precipitator optimum operation temperature upper limit), process is as follows：
T1=TLd, w+ΔT
Wherein, PwFor steam partial pressure in flue gas, unit kPa；K is the conversion related to the catalyst number of plies and ature of coal situation Coefficient, span 1.0~1.3, desirable 1.1, the 3 layers of catalyst arrangement desirable 1.2 of 2 layers of catalyst arrangement of conventional coal；This Value is 1.2 in invention；It can be calculated, T1=96.5 DEG C.
S04, according to the result of the test of Submicron Particles removal efficiency and cigarette kelvin relation, i.e. Submicron Particles control machine Reason sets optimal control temperature T ', and low cold precipitator optimum operation lowest temperature is T2=T1-T′。
Submicron Particles control mechanism is：When cigarette temperature is less than acid dew point (i.e. T1), flue gas enters low low-temperature condition, dedusting The particulate matter removing performance of equipment can just get a promotion.But if cigarette temperature is too low, it is not only due to heat exchanger end difference problem, heat time Situations such as receiving device design limitation, can increase investment amplitude so that economy is deteriorated；Moreover, if cigarette temperature declines again, it is possible to leads The removal effect of Submicron Particles is caused to be deteriorated.
In fact, in the case where flue-gas temperature reduces, flue dust ratio resistance decreases, after particulate matter reaches battery lead plate Electrostatic adhesive force is possible to diminish, it may appear that electrically charged particle thing reaches situation about being rebounded after electrode by battery lead plate；And comparatively, Submicron Particles are worst by the effect of charged trapping in itself, and the influence of Action of Gravity Field is smaller, if kicked up more from electrode Easily it is brought back in the middle of air-flow.So from the angle of optimization fine particle trapping, optimized operation cigarette temperature cannot be below acid dew point Too much.
According to low temperature electric cleaner Submicron Particles removal efficiency and a series of experimental results of cigarette kelvin relation, it is known that T ' ∈ [2,5], AarT ' takes 2 during ＜ 10；10≤AarT ' takes 3 to 4 when≤30；AarT ' takes 5 during ＞ 30.
According to ature of coal parameter situation in the present invention, T ' values can be calculated as 3.
S05, determine the optimal safe and highly efficient operation cigarette temperature T of low temperature electric cleanerMScope be 94-96 DEG C, and then design The temperature control strategy of low cold precipitator, the efficient removal effect of wholegrain footpath range of particle thing is realized, run according to the present invention Effect as in Figure 2-4.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.

Claims (5)

  1. A kind of 1. low temperature electric precipitation safe and highly efficient operation method based on coal property, it is characterised in that step is as follows：
    The first step, with reference to power plant's practical operation situation, detection uses coal, is reported according to coal analysis and obtains coal property ginseng Number；
    Second step, dust concentration and sulfuric acid mist concentration data are obtained or according to coal property parameter calculating dust concentration by surveying With the value of sulfuric acid mist concentration, according to the value of dust concentration and sulfuric acid mist concentration in the flue of cleaner entry position, dedusting is calculated The risks and assumptions of low-temperature corrosion occur for device, it is determined whether need to carry out mixed coal, to lift security；
    3rd step, according to calculation of dew-point temperature of acid method formula in flue gas, the coal property parameter in being reported with reference to coal analysis calculates To low cold precipitator optimum operation temperature upper limit；
    4th step, according to the result of the test of Submicron Particles removal efficiency and cigarette kelvin relation, i.e. Submicron Particles control machine Reason sets optimal control temperature, obtains low cold precipitator optimum operation lowest temperature；
    5th step, according to the judge and measure of second step, ensure the safe operation of low cold precipitator, according to the 3rd step, the 4th The result of calculation of step, design the temperature control strategy of low cold precipitator；Calculate low cold precipitator low-temperature corrosion risks and assumptions F, it comprises the following steps：
    S301, deduster gas approach dust concentration value A is obtained, can be by surveying or being calculated, calculating process of the present invention is such as Under：
    <mrow> <mi>A</mi> <mo>=</mo> <mn>1000000</mn> <mo>&amp;times;</mo> <mrow> <mo>(</mo> <mfrac> <msub> <mi>A</mi> <mrow> <mi>a</mi> <mi>r</mi> </mrow> </msub> <mn>100</mn> </mfrac> <mo>+</mo> <mfrac> <msub> <mi>q</mi> <mn>4</mn> </msub> <mn>100</mn> </mfrac> <mo>&amp;times;</mo> <mfrac> <msub> <mi>Q</mi> <mrow> <mi>a</mi> <mi>r</mi> <mo>,</mo> <mi>n</mi> <mi>e</mi> <mi>t</mi> </mrow> </msub> <mn>33913</mn> </mfrac> <mo>)</mo> </mrow> <mo>&amp;times;</mo> <msub> <mi>a</mi> <mi>f</mi> </msub> <mo>&amp;divide;</mo> <mrow> <mo>(</mo> <msub> <mi>B</mi> <mn>19</mn> </msub> <mo>-</mo> <msub> <mi>B</mi> <mn>20</mn> </msub> <mo>)</mo> </mrow> </mrow>
    <mrow> <msub> <mi>B</mi> <mn>19</mn> </msub> <mo>=</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>-</mo> <mfrac> <msub> <mi>q</mi> <mn>4</mn> </msub> <mn>100</mn> </mfrac> <mo>)</mo> </mrow> <mo>&amp;times;</mo> <mrow> <mo>(</mo> <mfrac> <msub> <mi>Q</mi> <mrow> <mi>a</mi> <mi>r</mi> <mo>,</mo> <mi>n</mi> <mi>e</mi> <mi>t</mi> </mrow> </msub> <mn>4026</mn> </mfrac> <mo>+</mo> <mn>0.77</mn> <mo>+</mo> <mn>1.0161</mn> <mo>*</mo> <mo>(</mo> <mrow> <mi>&amp;alpha;</mi> <mo>-</mo> <mn>1</mn> </mrow> <mo>)</mo> <mo>*</mo> <msub> <mi>B</mi> <mn>18</mn> </msub> <mo>)</mo> </mrow> </mrow>
    B20=0.1116 × Har+0.012×Mt+0.0161×(α-1)×B18
    B18=0.0889 × (Car+0.375×Sar)+0.265×Har-0.0333×Oar
    Wherein q4For incomplete combustion loss (%), afFor flying dust share, α is excess air coefficient, AarFor As-received buck (%), QAr, netFor net calorific value as received basis (kilojoule per kilogram), HarFor As-received hydrogen (%), MtFor total moisture (%), SarFor Full sulphur (%), CarFor As-received carbon (%), OarFor As-received oxygen (%)；
    S302, deduster gas approach sulfuric acid mist concentration value B is obtained, also can be by surveying or being calculated, the present invention calculated Journey is as follows：
    <mrow> <mi>B</mi> <mo>=</mo> <msup> <mi>&amp;eta;</mi> <mo>,</mo> </msup> <mo>&amp;times;</mo> <mn>2</mn> <mo>&amp;times;</mo> <mn>0.85</mn> <mo>&amp;times;</mo> <mfrac> <msub> <mi>S</mi> <mrow> <mi>a</mi> <mi>r</mi> </mrow> </msub> <mn>100</mn> </mfrac> <mo>/</mo> <mrow> <mo>(</mo> <msub> <mi>B</mi> <mn>19</mn> </msub> <mo>-</mo> <msub> <mi>B</mi> <mn>20</mn> </msub> <mo>)</mo> </mrow> <mo>&amp;times;</mo> <mn>1000000</mn> </mrow>
    η ' is transformation ratio；
    S303, corrosion risk factor calculation formula：F=B/A × 1000；Realize the efficient removal effect of wholegrain footpath range of particle thing Fruit.
  2. 2. a kind of low temperature electric precipitation safe and highly efficient operation method based on coal property as claimed in claim 1, its feature It is, according to risks and assumptions calculated value, as F≤5, deduster low-temperature corrosion risk is smaller, can directly be used without mixed coal.
  3. 3. a kind of low temperature electric precipitation safe and highly efficient operation method based on coal property as described in claim 1-2 is any, Characterized in that, the 3rd step, according to calculation of dew-point temperature of acid method, calculates optimum operation temperature upper limit, that is, calculates flue gas acid dew point temperature T1The upper limit, process are as follows：
    T1=TLd, w+ΔT
    <mrow> <msub> <mi>T</mi> <mrow> <mi>l</mi> <mi>d</mi> <mo>,</mo> <mi>w</mi> </mrow> </msub> <mo>=</mo> <mfrac> <mrow> <mn>238</mn> <mo>&amp;times;</mo> <mrow> <mo>(</mo> <mi>log</mi> <mi> </mi> <msub> <mi>P</mi> <mi>w</mi> </msub> <mo>+</mo> <mn>0.2132</mn> <mo>)</mo> </mrow> </mrow> <mrow> <mo>(</mo> <mn>7.5</mn> <mo>-</mo> <mi>log</mi> <mi> </mi> <msub> <mi>P</mi> <mi>w</mi> </msub> <mo>-</mo> <mn>0.2132</mn> <mo>)</mo> </mrow> </mfrac> </mrow>
    <mrow> <mi>&amp;Delta;</mi> <mi>T</mi> <mo>=</mo> <mfrac> <mrow> <mn>201.5</mn> <mo>&amp;times;</mo> <mroot> <mrow> <mi>k</mi> <mo>&amp;times;</mo> <msub> <mi>S</mi> <mrow> <mi>a</mi> <mi>r</mi> <mo>,</mo> <mi>z</mi> <mi>s</mi> </mrow> </msub> </mrow> <mn>3</mn> </mroot> </mrow> <mrow> <mn>1.25</mn> <mrow> <mo>(</mo> <msub> <mi>a</mi> <mi>f</mi> </msub> <mo>&amp;times;</mo> <msub> <mi>A</mi> <mrow> <mi>a</mi> <mi>r</mi> <mo>,</mo> <mi>z</mi> <mi>s</mi> </mrow> </msub> <mo>)</mo> </mrow> </mrow> </mfrac> </mrow>
    <mrow> <msub> <mi>S</mi> <mrow> <mi>a</mi> <mi>r</mi> <mo>,</mo> <mi>z</mi> <mi>s</mi> </mrow> </msub> <mo>=</mo> <mn>1000</mn> <mo>&amp;times;</mo> <mfrac> <msub> <mi>S</mi> <mrow> <mi>a</mi> <mi>r</mi> </mrow> </msub> <msub> <mi>Q</mi> <mrow> <mi>a</mi> <mi>r</mi> <mo>,</mo> <mi>n</mi> <mi>e</mi> <mi>t</mi> </mrow> </msub> </mfrac> </mrow>
    <mrow> <msub> <mi>A</mi> <mrow> <mi>a</mi> <mi>r</mi> <mo>,</mo> <mi>z</mi> <mi>s</mi> </mrow> </msub> <mo>=</mo> <mn>1000</mn> <mo>&amp;times;</mo> <mfrac> <msub> <mi>A</mi> <mrow> <mi>a</mi> <mi>r</mi> </mrow> </msub> <msub> <mi>Q</mi> <mrow> <mi>a</mi> <mi>r</mi> <mo>,</mo> <mi>n</mi> <mi>e</mi> <mi>t</mi> </mrow> </msub> </mfrac> </mrow>
    Wherein, PwFor steam partial pressure in flue gas, unit kPa, k are the transformation ratio related to the catalyst number of plies, afFor flying dust part Volume, AarFor As-received ash, QAr, netFor net calorific value as received basis, SarFor full sulphur.
  4. 4. a kind of low temperature electric precipitation safe and highly efficient operation method based on coal property as claimed in claim 3, its feature It is, k span 1.0~1.3.
  5. 5. a kind of low temperature electric precipitation safe and highly efficient operation method based on coal property as claimed in claim 4, its feature It is, calculates optimum operation lowest temperature, according to the result of the test of Submicron Particles removal efficiency and cigarette kelvin relation, i.e. sub-micro Rice grain thing control mechanism sets optimal control temperature T ', and the calculation formula of low cold precipitator optimum operation lowest temperature is： T2=T1-T’。
CN201610648802.2A 2016-08-08 2016-08-08 A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property Active CN106269250B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610648802.2A CN106269250B (en) 2016-08-08 2016-08-08 A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610648802.2A CN106269250B (en) 2016-08-08 2016-08-08 A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property

Publications (2)

Publication Number Publication Date
CN106269250A CN106269250A (en) 2017-01-04
CN106269250B true CN106269250B (en) 2018-04-06

Family

ID=57667343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610648802.2A Active CN106269250B (en) 2016-08-08 2016-08-08 A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property

Country Status (1)

Country Link
CN (1) CN106269250B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112536153A (en) * 2020-11-23 2021-03-23 西安热工研究院有限公司 Novel energy-conserving optimization integrated management system of electricity dust removal
CN117339759B (en) * 2023-12-04 2024-04-09 浙江大维高新技术股份有限公司 Digital twin system and method for dust remover

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203030395U (en) * 2012-12-25 2013-07-03 北京博奇电力科技有限公司 Static condensation low-temperature dust removing system
CN103363536A (en) * 2013-07-10 2013-10-23 浙江省电力设计院 Low temperature electric precipitation system in fuel electric plant
CN104484578A (en) * 2014-12-31 2015-04-01 浙江菲达环保科技股份有限公司 Low-low-temperature electric dust remover ash sulfur ratio computing method and corrosion degree control method
CN104841556A (en) * 2015-03-24 2015-08-19 江苏新中环保股份有限公司 Low-low-temperature electric dust remover
CN104992028A (en) * 2015-07-17 2015-10-21 华北电力大学（保定） Fossil power generation unit coal blending scheme acquisition method
CN105170331A (en) * 2015-08-31 2015-12-23 浙江菲达环保科技股份有限公司 Method for determining inlet flue gas temperature of low-low temperature electrostatic precipitator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203030395U (en) * 2012-12-25 2013-07-03 北京博奇电力科技有限公司 Static condensation low-temperature dust removing system
CN103363536A (en) * 2013-07-10 2013-10-23 浙江省电力设计院 Low temperature electric precipitation system in fuel electric plant
CN104484578A (en) * 2014-12-31 2015-04-01 浙江菲达环保科技股份有限公司 Low-low-temperature electric dust remover ash sulfur ratio computing method and corrosion degree control method
CN104841556A (en) * 2015-03-24 2015-08-19 江苏新中环保股份有限公司 Low-low-temperature electric dust remover
CN104992028A (en) * 2015-07-17 2015-10-21 华北电力大学（保定） Fossil power generation unit coal blending scheme acquisition method
CN105170331A (en) * 2015-08-31 2015-12-23 浙江菲达环保科技股份有限公司 Method for determining inlet flue gas temperature of low-low temperature electrostatic precipitator

Also Published As

Publication number Publication date
CN106269250A (en) 2017-01-04

Similar Documents

Publication Publication Date Title
US20090157230A1 (en) Method for controlling a flowrate of a recirculated exhaust gas
CN104504498A (en) Coal-fired power generating set ultralow emission environmental protection electricity price monitoring method
US20090150056A1 (en) Method and system for controlling a flowrate of a recirculated exhaust gas
CN103148473A (en) Optimal operation method and system for utility boiler based on CO
CN104268433B (en) Method for monitoring unit power generation coal consumption deviation caused by variation of gas boiler operating parameters
CN104676620A (en) Flue gas processing system and flue gas processing method capable of enabling low-low temperature electrostatic precipitation to be combined with water pollination type GGH (Gas Gas Heater)
CN104992028A (en) Fossil power generation unit coal blending scheme acquisition method
CN101457694A (en) Method and system for controlling an exhaust gas recirculation system
CN106269250B (en) A kind of low temperature electric precipitation safe and highly efficient operation method based on coal property
CN103885337B (en) A kind of low nitrogen burning optimal N Ox discharge capacity control method based on cost calculation
CN104281985A (en) Thermal power generating unit energy conservation and emission reduction comprehensive performance evaluation method based on radar map
CN103363536A (en) Low temperature electric precipitation system in fuel electric plant
CN103926833A (en) Method for determining inlet parameter of SCR denitration device
CN107679018A (en) A kind of poor computational methods of coal-burning power plant limit coal unit price
CN107641679B (en) A kind of Wet Dust-trapping of Converter energy-saving control method
Rolfe et al. Techno-economic and environmental analysis of calcium carbonate looping for CO2 capture from a pulverised coal-fired power plant
Li et al. Air pollutant emissions from coal-fired power plants
CN113669139A (en) Marine exhaust gas discharge device and discharge method thereof
CN105004688A (en) Exhaust gas monitoring system of thermal power station
CN105808924A (en) Boiler combustion adjustment working conditions economy comparison method
CN102721798B (en) Method for calculating coal quality sulfur component in real time
CN104484578A (en) Low-low-temperature electric dust remover ash sulfur ratio computing method and corrosion degree control method
CN103343978A (en) Method for predicting and diagnosing pulverized coal flame stability
Kuai et al. Temporal and spatial variation characteristics of air pollution and prevention and control measures: evidence from Anhui Province, China
CN114049918A (en) Method and device for evaluating performance of carbon dioxide capture

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant